William galloway



initd gisten @met (Milice.

Letters Patent No. 101,606, dated April 5, 187

The Schedule referred to in these Lettersl Patentv and making part of -the same.

I, WILLIAM GALLowiu, of .1hiladelphia, county of Philadelphia, State of Pennsylvania, have invented an Improvement in APreserving-Jars, of which' the following is a specification.

Nat'u-re and Object of the Inrcnt'ion.

My invention relates to au improvement in that class of fruit-jars in which `pressure is applied to the cover and packing by means of cams connected to hails, which can he turned over the covers of the jars; and

My invention .consists in forming, on the peripheries of such cams, flat'portious, or the equivalent 'to the same, so that they may be self-retaining in any position to which they may be turned.

Description of the Accompanying Drawing.

Figure 1 is a side view, partlyin section, ofthe upper port-ion of a preserving vessel with my improvement;

Figure 2, an exterior view;

Figure 3, a planview; and

Figures 4 and 5, views illustrating modifications of my invention.

General Description.

A represents the upper -portion of a preserving vessel, and a its mouth, round the edge of which is fitted a packing-ring, b, the cover B ot' the month bearing upon this ring.

A yoke or bail, D, extends across the top of the vessel, and can be turned or swung laterally in either direction over its cover, its hooked ends catching be. neath a shoulder, e, formed near the top of the vessel, as shown in fig. 2.

On this yoke a. cam, G, is hung loosely, so that it can be turned in one direction ,to depressthe cover, and in an opposite direction when the cover has to be relieved from pressure and removed from the vessels mouth.

I am aware that a cam hung toa yoke has been heretofore used for applying pressure to' the cover of 'a preserving-vessel, over which the hail extends so as plying pressure to the cover, to tnrn it toa definite position, in order to prevent the bail from swinging to one side, andthe cam from turning back again and allowing the cover to become loose.

As the packing-rings andthe seats for the same vary in different jars, the covers of some jars may require the cams to be turned to a greater extent; hence the improvement of making the cam self-retaining in any position to which it maybe adjusted. I accomplish this by forming on the edge of the cam a number of iiat places, one or other of which must bear upon the cover when the latter is depressed, so that the rotation of the cam and lateral movement of the bail are prevented, until by a slight effort the cam is turned therefrom, when the cover has to be released from pressure.

The c'am may have, on its edge, projections, as shown in figs. 4 and 5, which, it will be evident, are the equivalents oi' the fiat places :l: :17.

0 Zahn l The cam G, having flat portions :c *on its periphery, and hung to a bail connected to a jar so as to swing -or turn laterally over the cover of the latter, as spec- Witnesses:

F. B. RICHARDSON, HARRY SMITH, 

